CD8A and adenocarcinoma: When stratified according to histology, high stromal CD8+ TILs was associated with significantly improved prognosis in squamous tumours (HR 0.55, 95% CI 0.32–0.94, p = 0.026) but not in adenocarcinomas (HR 0.83, 95% CI 0.54–1.28 p = 0.385).